I had never looked at the FX series but now that I have I have to agree with the OP. Looking at Trek.com and comparing the Domane to the FX, $1899 buys the Domane 4.3 with 5800 where the same money only buys a Tiagra 10 speed with flat bars in the FX 7.7. That alone should be a $300 downgrade, IMO.